Update to kernel headers v4.7.2.

Modify the kernel header update script to rename C++ keyword
struct members to something else. This fixes problems when including
these kernel files in C++ code.

Also, make a manual change to linux/fib_rules.h and comment out the
value FRA_PAD since it conflicts with a special android kernel value
FRA_UID_START that has not been upstreamed yet.

Test: Built aosp_angler, aosp_x86_64, aosp_mips (bionic only)
Test: Booted on angler and ran bionic unit tests
Test: Built these changes in internal master

Change-Id: Ia22b7e3ca409404696dba76311f49157f4a9ceed
diff --git a/libc/kernel/uapi/linux/net_tstamp.h b/libc/kernel/uapi/linux/net_tstamp.h
index 045201c..96e82eb 100644
--- a/libc/kernel/uapi/linux/net_tstamp.h
+++ b/libc/kernel/uapi/linux/net_tstamp.h
@@ -39,38 +39,40 @@
   SOF_TIMESTAMPING_LAST = SOF_TIMESTAMPING_OPT_TSONLY,
   SOF_TIMESTAMPING_MASK = (SOF_TIMESTAMPING_LAST - 1) | SOF_TIMESTAMPING_LAST
 };
-struct hwtstamp_config {
+#define SOF_TIMESTAMPING_TX_RECORD_MASK (SOF_TIMESTAMPING_TX_HARDWARE | SOF_TIMESTAMPING_TX_SOFTWARE | SOF_TIMESTAMPING_TX_SCHED | SOF_TIMESTAMPING_TX_ACK)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+struct hwtstamp_config {
   int flags;
   int tx_type;
   int rx_filter;
-};
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+};
 enum hwtstamp_tx_types {
   HWTSTAMP_TX_OFF,
   HWTSTAMP_TX_ON,
-  HWTSTAMP_TX_ONESTEP_SYNC,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  HWTSTAMP_TX_ONESTEP_SYNC,
 };
 enum hwtstamp_rx_filters {
   HWTSTAMP_FILTER_NONE,
-  HWTSTAMP_FILTER_ALL,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  HWTSTAMP_FILTER_ALL,
   HWTSTAMP_FILTER_SOME,
   HWTSTAMP_FILTER_PTP_V1_L4_EVENT,
   HWTSTAMP_FILTER_PTP_V1_L4_SYNC,
-  HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ,
   HWTSTAMP_FILTER_PTP_V2_L4_EVENT,
   HWTSTAMP_FILTER_PTP_V2_L4_SYNC,
   HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ,
-  HWTSTAMP_FILTER_PTP_V2_L2_EVENT,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  HWTSTAMP_FILTER_PTP_V2_L2_EVENT,
   HWTSTAMP_FILTER_PTP_V2_L2_SYNC,
   HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ,
   HWTSTAMP_FILTER_PTP_V2_EVENT,
-  HWTSTAMP_FILTER_PTP_V2_SYNC,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  HWTSTAMP_FILTER_PTP_V2_SYNC,
   HWTSTAMP_FILTER_PTP_V2_DELAY_REQ,
 };
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */